<template >
    <div>
        <button @click="clickHandler">Call father</button>
    </div>
</template>
<script>
export default {
    data() {
        return {
            subject:'Web前端框架技术',
            score: 88,
        };
    },
    methods: {
        clickHandler() {
            this.&emit('score',this.subject,this,score);
        }
    }
};
</script>
<style>
    
</style>